Stress dependence of magnetostrictions and strains in [111]-oriented single crystals of Terfenol-D

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	Stress dependence of magnetostrictions and strains in [111]-oriented single crystals of Terfenol-D
	Zhao, XG ; Wu, GH ; Wang, JH ; Jia, KC ; Zhan, WS
刊名	JOURNAL OF APPLIED PHYSICS
	1996
卷号	79 期号:8 页码:6225
ISSN号	0021-8979
通讯作者	Zhao, XG (reprint author), CHINESE ACAD SCI,INST PHYS,STATE KEY LAB MAGNETISM,POB 603,BEIJING 100080,PEOPLES R CHINA.
中文摘要	Single crystals of Tb0.27Dy0.73Fe2 were prepared successfully by the Czochralski (CZ) method using a magnetic levitation cold crucible first in this laboratory. The Lane x-ray technique and metallography verified its twin-free single crystalline perfection. Weidmanstatten precipitation (WSP) slightly exists in these specimens with WSP platelets parallel to the {111} planes of Terfenol-D. Saturation magnetostriction were measured along three principal crystallographic axes [111], [11(2) over bar] and [1(1) over bar0$] of single crystal Tb0.27Dy0.73Fe2 with magnetic field parallel and then perpendicular to the measuring direction, which gives an intrinsic magnetostriction lambda(111) = 1640 x 10(-6) for [111] easy axis. Stress dependence of magnetostrictions and strains measured along three mutually perpendicular axes, [111], [11(2) over bar], and, [1(1) over bar0$] on [111]-oriented single crystalline rods of Terfenol-D indicates that apparent magnetostriction for [111] direction increases with increasing applied compressive stress along the rod axis, and reaches 2375 x 10(-6) under a stress of 24 MPa and a magnetic field of 20 kOe. Maximum d(33) decreases with the increment of applied stresses and the amount of WSP, and ranges from 1 x 10(-6)/Oe to 6 x 10(-6)/Oe at about 500 Oe. Less hysteresis appears. Magnetizing processes are calculated and compared with the measured changes of magnetostriction. The authors conclude that [111]-oriented single crystal of Terfenol-D is suitable for precise displacement actuators although it would be much better to eliminate the WSP precipitation. (C) 1996 American Institute of Physics.
收录类别	SCI
语种	英语
公开日期	2013-09-24
内容类型	期刊论文
源URL	[http://ir.iphy.ac.cn/handle/311004/53130]
专题	物理研究所_物理所公开发表论文_物理所公开发表论文_期刊论文
推荐引用方式 GB/T 7714	Zhao, XG,Wu, GH,Wang, JH,et al. Stress dependence of magnetostrictions and strains in [111]-oriented single crystals of Terfenol-D[J]. JOURNAL OF APPLIED PHYSICS,1996,79(8):6225.
APA	Zhao, XG,Wu, GH,Wang, JH,Jia, KC,&Zhan, WS.(1996).Stress dependence of magnetostrictions and strains in [111]-oriented single crystals of Terfenol-D.JOURNAL OF APPLIED PHYSICS,79(8),6225.
MLA	Zhao, XG,et al."Stress dependence of magnetostrictions and strains in [111]-oriented single crystals of Terfenol-D".JOURNAL OF APPLIED PHYSICS 79.8(1996):6225.